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https://issues.apache.org/jira/browse/DERBY-3892?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Dag H. Wanvik updated DERBY-3892:
---------------------------------

    Attachment: Main.java

> Query execution hangs
> ---------------------
>
>                 Key: DERBY-3892
>                 URL: https://issues.apache.org/jira/browse/DERBY-3892
>             Project: Derby
>          Issue Type: Bug
>    Affects Versions: 10.4.1.3, 10.4.2.0
>         Environment: OS: Windows Vista
> Application environment: Java 1.5 Swing Application using Derby DB in the 
> embedded mode as part of the application.
>            Reporter: Georgi Hristov
>         Attachments: Main.java
>
>
> Having the following db schema:
> CREATE TABLE Messaged_Users (ACCOUNT_ID VARCHAR(20) NOT NULL, 
>       USER_ID VARCHAR(20) NOT NULL,
>       DATE TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
>       STATUS INT DEFAULT 0,
>       CONSTRAINT PK_ACC_USER_ID PRIMARY KEY (ACCOUNT_ID, USER_ID))
> CREATE TABLE Users (USER_ID VARCHAR(20) NOT NULL CONSTRAINT USER_ID_PK 
> PRIMARY KEY, 
>       USER_NAME VARCHAR(50) NOT NULL)
> with approximately 100,000 records in each table and trying to execute the 
> following query:
>       PreparedStatement searchStatement = conn.prepareStatement("SELECT 
> b.USER_ID, b.USER_NAME FROM Users a JOIN Messaged_Users b ON    
> a.USER_ID=b.USER_ID AND a.ACCOUNT_ID=(?)");
>       searchStatement.setString(1, "5533232");
>       ResultSet foundUsers = searchStatement.executeQuery();
> the executeQuery method actually never ends. I've waited for more than 30 
> mins and it didn't finish. I've tried it really many times but without any 
> progress the query just hangs. I presume that this is definitely a bug in the 
> derby db which should be fixed. Please note also that this fix is very urgent 
> for us so that we can deliver our application. 
> Thanks in advance for looking into this issue.
>  
>  

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